Okay also great advice. My starter was Athel but i got Kael from mystery when Athel was 40lvl already, but maxed both to 50 since there is so much hype around Kael, im already working on 60ing someone, already have 4/5 food champs on 5 star lvl1, working on 5th one. But not sure if Tayrel or Kael, any suggestions? since i have spirit host also on lvl 50 and Kathun or whatever the name is on lvl 36

I guess Kael first may be marginally easier, but it doesn't really matter that much. Either one is capable of farming brutal 12.3 easily enough, as well as contributing in dungeons and CB. Tayrel definitely has more long-term value than Kael, you can keep using him in many places even in endgame, while Kael would have a much more limited role by then - but for now, you'll want both at 60 and to use both basically everywhere.